To make a connection, you must use the same cabling system that was used in the line
of speakers for voice evacuation zones.
4.6 SPEAKER LINES
The equipment has 8 independent amplification channels, each of them with two
speakers line outputs. The power amplification of each channel is distributed in both lines so
their impedance of each parallel line can not be lower than the nominal amplifier impedance.
This feature enables great flexibility in the speaker connections, allowing the connection of
redundant speaker lines for the same evacuation zone.
In Appendix C: Cabling section for speaker lines. can be found a table guide that is
used for the calculation of which cabling section should be implemented in the installation
depending on the power and length of the cable.
4.6.1 LINE CABLING. STANDARD MODE
The wiring of the speakers follows a classic scheme. A single cable an connect all the
speakers that belong to the same amplifier channel. This wiring system can be used with or
without end of lines devices (see 4.6.4). This way, the channel power amplification is
distributed by one single output line.
4.6.2 LINE CABLING. AB MODE
The wiring of speakers using the AB mode allows wiring guide of one same voice
evacuation system, using two different routes. This way, it reduces the risk of completely losing
the connection of a zone which requires voice evacuation in case of damage to one of the
lines. This wiring format can be used with or without end of line devices (see 4.6.4). This way,
the channel power amplification is distributed on both output lines.
LDA Audio Tech - Severo Ochoa Nº 31- 29590 MÁLAGA, ESPAÑA. Tlf: +34 952028805
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